I found it hialious, so he walked miles and doing nothing as bad guy, and now he choose to redeem himself in a way of walking another miles... 
Yeah best redemption ever
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Its like me breaking into my neighbor's house steal all of his worthy possesion and kitten his beautiful dughter on my way out and in order to redeem myself for what I did I'm gonna go and travel to Hawaii to have my redemption vacation its all gonna be good then
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Not like this guys...
Sasuke could have changed, but it had to happen in a believable way.
That's why I was against Naruto x Sasuke as the final fight. It would be cool if the end fight had both of them teaming up together, their fights could've happened before it
Yes change but not complete 180 to a character that was never there . His changed should have been not being evil anymore and accept his bonds that was all but turn into this lovey dovey I ma saint now kitten , the rude/blunt/assholish aspect of his character should have never changed bc its not him at all its not the character that we have seen for 700 chapters its ridiculous
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And yes the change was so sudden no actual build up to it at all it all in a hurry which why I always said that his redemption is gonna be the kittentiest thing ever , the fight should have been longer at least another volume for it be done at least good .